Amino-acids and peptides. Part XXXIV. Anchimerically assisted coupling reactions: the use of 2-pyridyl thiolesters
作者:K. Lloyd、G. T. Young
DOI:10.1039/j39710002890
日期:——
presented of the use in peptide synthesis of esters for which aminolysis is assisted by a neighbouring group. 2-Pyridylthiolesters of phthaloyl-, benzyloxycarbonyl-, and t-butoxycarbonyl-amino-acids are described, and it is shown that they condense very rapidly even with hindered amino-esters to give high yields of protected dipeptides. Phthaloyl-L-phenylalanine pyrimidin-2-yl thiolester is also described
Z-Gly-Val-Ser-Phe-Val-Leu-OMe and related peptides were synthesized by the conventional solution method and their attractant and repellent activities for Aedes aegypti (mosquito) and Blattella germanica (cockroach) were examined. Z-Val-Leu-OMe exhibited potent repellent activity against not only Aedes aegypti but also Blattella germanica.